Self-energizing brake



Nov. 12, 1935.

SELF ENERGIZING BRAKE Filed April 10, 1954 P. L. STCQ CK 0 2,020,809

Patented Nov. 12, 1935 UNlTED STATES PATENT OFFICE Applicatio;1::$sl0,(gfitsiiilllio. 719,920

This invention relates to a disc self-energizing brake and it consists in the novel features hereinafter described and claimed.

An object of the invention is to provide a brake 5 structure adapted to be applied to the wheels of any motor or engine driven vehicle or industrial machine where a brake structure isused, and which is simple in structure and arrangement and which may be easily and quickly adjusted.

10 A further object of the invention is to provide a brake mechanism moving friction disc plates with a friction rnember interposed between them, one of the said discs being carried by the axle and the other by the axle housing and with a 15 friction member interposed between the disc plates, there being further provided means for moving one of the disc plates whereby the friction member is clamped between the plates to provide the braking or arresting effect upon the a 20 parts.

other and whereby the friction member is firmly 25 clamped between the friction members.

With the above and other objects in view it is particularly pointed out that this brake may be used in a plurality of forms without departing from the idea of the invention.

30 In the accompanying drawing:

Figure 1 is a transverse sectional view of the disc self-energizing brake with fragments of parts thereof shown in elevation.

Figure 2 is a transverse sectional view of an 35 axle and axle housing with the brake mounted thereon and showing the brake mechanism out upon four distinct planes, the plane of the quadrant A--A being out upon the line A--A of Figure 1; the plane of the quadrant B-B being out upon the line B-B; the plane of the quadrant CC being out upon the line C-C and the plane of the quadrant DD being cut upon the line D--D of said Figure 1.

As illustrated in the accompanying drawing the 45 axle housing I, is provided upon its exterior surface with a thread 2 and a series of spline ridges 3. Anti-friction bearing members 4 are located in the" housing and receive the end portion of an axle 5. Said axle is provided with an annular 50 flange 6 which is located between the bearing members and prevents longitudinal movement of the axle with relation to the bearings and housing.

A hub l is mounted upon the axle and is pro- 55 vided with a series of studs 8 which may be employed for attaching a wheel, (not shown) to the hub in a. usual manner. A disc flange 9 is formed integral with the hub and carries upon its inner face a friction plate I0.

Rings II and I2 surround the axle housing and the ring II is provided with grooves l3 which receive the spline ridges 3 as best shown in Figure 2 of the drawing. A nut I4 is screwed upon the thread 2 and bears against the side of the ring H and a nut I5 is also screwed upon said 10 thread and serves as a jamb or an abutment for holding the nut l4 securely in position upon the axle housing and against the ring I l.

The ring I2 is provided with an outstanding lug IE to which an operating rod (not shown) may be attached in a usual manner. The ring ii is provided upon its inner face with V-shaped tenons ll which are housed in V-shaped mortises I8 provided in the ring i2. The ring i2 may be turned upon the axle housing by strain applied to the lug l6 and when so turned the walls of the mortises l8 ride upon the edges of the tenons whereby the ring l2 moves laterally with relation to the ring I I.

A sleeve l9 surrounds the housing and is provided at its exterior with lugs 20 in which are slidably retained pins 2|. The said pins at one end bear against the side of the ring i2 and the other ends of the pins are attached to a ring 22 which also surround the said housing. One end I of the sleeve is received in the ring i2, as best shown in Figure l and the sleeve is provided with grooves 23 which receive the spline ridges 3. A plate 24 is carried by the sleeve and forms a part thereof. A drum member 25 is attached to the plate 24 and is provided with a zig-zag edge 25.

A disc 21 is mounted upon the axle housing and carries a friction plate 28. A friction ring 30 is carried upon the plate 28 and is interposed between the plates IO and 28 as best shown in Figure .1. The disc 21 is provided with an annular flange 3| and a drum member 32 is mounted upon the plate 21, and is provided with a zig-zag edge 33 which is juxtaposed with relation to the edge 26 of the drum member 25. Said drum members are housed in the flange 3| and the plate 24 serves as a side for the casing thus formed for the drum members. The side of the ring 22 may bear against the intermediate area of the drum member 32 when the pins are moved longitudinally as hereinbefore described and thus means are provided for tightly clamping the friction ring 30.

A nut 34 is screwed upon the end of the axle housing I and a coil spring 35 is interposed between the said nut and the hub 36 of the plate 21. The said spring is under tension whereby the friction ring 30 is held normally out of enagement with the friction plate l as best shown in Figure 1 of the drawing.

When the ring I! is turned as hereinbefore described and through the intervening parts the ring 22 moves the plate 21 toward the plate 9 the relation to each other.

When it is desired to adjust the parts, to compensate for wear or other reasons the nuts l4 and I5 may be turned to adjust the intervening parts to the desired position.

It is to be understood that various modifications including the making of certain parts in one unit, and of the deviations not herebefore mentioned but which are included within the scope of the appended claims may be made without departing from the spirit of the invention.

,I claim:

1. In combination with a wheel, an axle and a non-rotating member having a housing, a disc self-energizing brake comprising a disc plate carried by the axle and having a friction plate, a disc plate slidable upon the housing and having a friction plate opposite the first mentioned friction plate, a friction member interposed between said disc plates, drum members carried by the axle housing and the slidable disc plate respectively, said drum members having zig-zag opposed edges, and means for moving the drum members laterally with relation to each other to clamp the friction member between the disc plates.

2. In combination with a wheel, an axle and a non-rotating member having a housing, a disc plate carried by the axle and having a friction plate, a disc plate slidable upon the housing and having a friction plate opposite the first mentioned friction plate, a friction member interposed between said disc plates, drum members carriedby the axle housing and the slidable plate,

said drum members having zig-zag opposed edges 5 and means for moving the drum members with relation to each other.

3. In combination with a wheel, an axle and a non-rotating member having a housing, a disc plate carried by the axle and having a friction plate, a disc plate slidable upon the housing and having a friction plate opposite the first mentioned friction plate, a friction member interposed between said disc plates, drum members carried by the axle housing and the slidable plate, said drum members having zig-zag opposed edges, means for moving the drum members with relation to each other and spring means for holding the friction plates away from each other.

4. In combination with a wheel and a nonrotating member having a housing, a disc plate slidable upon the housing and having a friction plate, a disc plate fixed to the axle and having a friction plate, a friction member interposed between said friction plates, drum members carried by the axle housing and the slidable plate, said drum members having zig-zag opposed edges,

a ring bearing against one drum member, pins carried by the ring, means for moving the pins and spring means for holding the friction plates .away from each other.

5. In combination with a wheel and a nonrotating member having a housing, a disc plate slidable upon the housing and having a friction plate, a disc plate fixed to the axle and having a friction plate, a friction member interposed between said friction plates, drum members carried by the axlehousing and the slidable plate, said drum members having zig-zag opposed edges, 9. ring bearing against one drum member, pins carried by the ring, a second ring turnable upon the axle housing, means for moving the last mentioned ring laterally when turned and said turnable ring bearing against the ends of the pins.

PHILIP L. STOCK. 

